Ответ:
- \(\sqrt{27}=\sqrt{9\cdot3}=3\sqrt3\).
- \(\sqrt{50}=\sqrt{25\cdot2}=5\sqrt2\).
- \(\sqrt{245}=\sqrt{49\cdot5}=7\sqrt5\).
- \(-\frac12\sqrt{80}=-\frac12\cdot4\sqrt5=-2\sqrt5\).
- \(0.2\sqrt{300}=0.2\cdot10\sqrt3=2\sqrt3\).
- \(\sqrt{675}=\sqrt{225\cdot3}=15\sqrt3\).
